Geometric Formulae

 

Definitions

       A = area, B = base, C = circumference
       D = diameter, H = height, L = length
       R= radius, W = width, pi = ? = 3.1416

Circle

       Area =  3,1416  x  R sq.
       Circumference = 3,1416 x D   = 2 ( 3,1416 x R )
       Diameter = C / 3,1416
       Radius = C / (2 x 3,1416)

Sphere

       Surface area = C x D
       Volume = 0.1667(Surface area) x D

       Circumference = 3.8978 x (cube root of Volume)
       Diameter = 1.2407 x (cube root of Volume)
       Diameter = 0.56419 x (square root of Surface)


Rectangle or Square

       Area = L x W

Cube or Rectangular Box

       Volume = L x W x H

Triangle

       Area = ( B x H ) / 2

Cone

       Volume = [ H x (Area of Base) ] / 3

Cylinder or Prism

       Volume = H x (Area of base)